Yu-Shan Wu

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This paper presents a method for sharing and hiding secret images. The method is modiÿed from the (t; n) threshold scheme. (Comput.Graph. 26(5)(2002)765) The given secret image is shared and n shadow images are thus generated. Each shadow image is hidden in an ordinary image so as not to attract an attacker's attention. Any t of the n hidden shadows can be(More)
— Video-based Heart Rate Measurement has drawn a lot of attention in recent years. A few papers have been proposed in this work and most of them applied Fourier transform peak interval determination method for heart rate measurement. However, the analyzing duration for one outcome in these methods is usually longer than 15 seconds. This is because that the(More)
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